Joist spacer



FIG. 1 is a perspective view of the joist spacer showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevation view thereof; and,

FIG. 7 is a rear elevation view thereof.

The broken lines depicting bolts in FIGS. 1-4 and 6-7 are for illustrative purposes only and form no part of the claimed design. 

CLAIM I claim the ornamental design for a joist spacer, as shown and described. 